diff --git a/platform/firefox/install.rdf b/platform/firefox/install.rdf
index e1fefc21e..f017f7c74 100644
--- a/platform/firefox/install.rdf
+++ b/platform/firefox/install.rdf
@@ -19,7 +19,7 @@
             <r:Description>
                 <id>{{ec8030f7-c20a-464f-9b0e-13a3a9e97384}}</id>
                 <minVersion>24.0</minVersion>
-                <maxVersion>39.0</maxVersion>
+                <maxVersion>40.0</maxVersion>
             </r:Description>
         </targetApplication>
 
@@ -28,7 +28,7 @@
             <r:Description>
                 <id>{{aa3c5121-dab2-40e2-81ca-7ea25febc110}}</id>
                 <minVersion>24.0</minVersion>
-                <maxVersion>39.0</maxVersion>
+                <maxVersion>40.0</maxVersion>
             </r:Description>
         </targetApplication>
 
@@ -37,7 +37,7 @@
             <r:Description>
                 <id>{{92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a}}</id>
                 <minVersion>2.21</minVersion>
-                <maxVersion>2.36</maxVersion>
+                <maxVersion>2.37</maxVersion>
             </r:Description>
         </targetApplication>
     </r:Description>